Portion of a battery



FIG. 1 is a front view of a portion of a battery showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a perspective top front view thereof;

FIG. 6 is a perspective bottom front view thereof; and,

FIG. 7 is a front view of the label of FIGS. 1-6 shown in isolation as it appears an unassembled state from the battery. 

The ornamental design for a portion of a battery, as shown and described. 